Improvement in water-meters



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Wifn esfe N JWM ILPETERS, PHDTO-LITHDGHAPHER, WASHLNGTUN. D. C.

UNITED STATES PATENT CEEICE.

iMPROVEMENT IN WATER-.M ETERS.

Specification forming part of Letters Patent No. 33,690, dated November'12, 1861.

To aZZ whom t may concern.-A

Beit known that we, SILAS BAKKER and AUSTIN H. SMITH, of Hartford,county of Hartford, Stat-e of Connecticut, have invented anew and usefulImprovement in the Construction of.\Vater-Mete1s; and we do herebydeclare that the following is a full and exact descriptionthereof,reference being had to the accompanying drawings and letters ofreference markedthereon.

The nature of our invention consists in the manner of discharging thewater and the construction of the piston with its valves, &c.

To enable others skilled in the art to make and use our invention, wewill proceed to describe its construction and operation.

Figure l is a side elevation of water-meter; Fig. 2, plan ofwater-meter; Fig. 3, section of water-meter, Fig. 4, end view of centersection; Fig. 5, front end of meter, Figli, back end view of front head.

LetterA represents the cylinder; B, piston; C, valves; D, piston-valve;E, piston-rod; F, valve-rod; G, arm; H, pipe; I, springs; J, collars; K,rubber valve-seats; L, glass cover for piston; M, leather packing; N,springs 5 O, bushing; P, inlet; Q, outlet; R, water-passage fromvalve-chest to cylinder; S, guide for piston and valve rod; V,stufng-box- The cylinder A we construct with three parts, vbolting themtogether near the center. The center part of cylinderA is bored for thepiston, and also the small cylinder or valvechest. Said chest is hushedwith brass to prevent its wearing and rusting.

The piston B is made of a brass tube twice the length of the stroke, andnear the center are two heads a suitable distance apart to admit of thepassage lof the water. The outside of the piston B is covered with glassL to prevent the wear of the piston B. Into the center of the front headis attached the piston-rod E, and in the back one is the delivery-pipeH.

The valves C C are outside of the heads of piston B, and are connectedtogether by the valve-stems running through the heads, and havingsufficient length for the lift of the valves C C.

The piston-valve D has rubber valve-seats attached to each end of thepiston D and work against each end of the valve-chest, closing theopenings alternately. The upper part of the piston-valve D is cut awayat each end on the top part, leaving the said part of the piston thesame length of the opening P. Y

The valve-rod F is attached to one end of the piston-valve D, and theopposite end running through the guide S. On the valve-rod F are twocollars J J and springs I I, which determine the length of stroke of thepiston B. The openings from the valve-chest are made to lead the waterfrom the front end of the valve-chest through the openings R in thecenter part of A to the back end of the cylinder and from the back endof the valvechest to the front end of the cylinder. The openings, beingconstructed to lead the water to the opposite ends of the cylinder,allow the valve D to travel in the same direction as the piston B andreverse the direction of the piston B as soon as it reverses the valve.The piston B being covered with a glass covering prevents the wear ofleather packing M, which is in the conter part of the cylinder A. Thisleather is held out by springs N, bearing against the cylinder B andleather M. The ends of M are fastened to the cylinder by its havinganges turned out, which are fastened between the three parts of thecylinder A A A.

The delivery-pipe His attached to the backl end of the piston, the outerend of H running through the stufng-box V to the outer pipe Q, which islarger than H. The operation of the meter is as follows: The water islet through the pipe ID into the chest, as represented by the arrows TT, the pistonvalve D being at the front end of the chest, the waterpassing out through the opening at the back end of the chest through thepassage R to the opening in the front end of cylinder A, the pressure ofthe water in the front end of cylinder A closing the valves C C in thepiston and opening them on the opposite side of the piston, allowing thewater in the back end of cylinder A to pass out through the back head ofthe piston under the valves C C, and thence through the pipe H to theoutlet. lVhen the piston B has traveled far enough for the arm G tostrike against the springs I, closing it between the arm and collar J onthe valve-rod, the valvepiston is then moved by the arm G until theopenin` I is closed by the piston D shutting off the pressure from thatend. The spring I has its power retained between the arm G and collar J,and as soon as the piston-valve has closed the opening P the pressure isrelieved in the said end ot the valve-Chest, and the retained power ofthe spring,` I at once throws the piston-valve past the opening,` P andletting the water against the opposite side of the piston-valve, whichcloses the seat for the valve in the back end of the chest, and openingthe valve in the'front end of the ehest,whieh lets the water from thefront end of the chest to the back end of the cylinder.

The great advantages obtained in this method of constructingwater-meters is in the durability of the packing and the method ofoperating the valves.

lVhat we ola-ini as our invention is" l. The arrangement ofthe cylinderA and the hollow piston B, said piston having an outlet H from one end.

2. The combination of the piston D and valves K K, said valves being onthe end of the piston D and moved by the Valve-rod F.

3. The Combination ot' the glass covering L on the piston B and theleather packing M in the center part ot' Cylinder A, said packing1 beingkept tted to the piston B by the springs N and held between the threeparts ot' the cylinder A A A, all as herein set forth and described.

SILAS BARKER. AUSTIN H. SMITH.

Witnesses:

W. W. SMITH, A. XV. RoBERTs.

